Home / 12,489.13-17,234.46-6,823.61

Finding the Fourth Proportional to 12,489.13, 17,234.46 and 6,823.61

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Solution

The fourth proportional to 12,489.13, 17,234.46 and 6,823.61 is: 9,416.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,489.13 : 17,234.46 = 6,823.61 : x
  2. Step 2: Convert to fraction form
    12,489.13/17,234.46 = 6,823.61/x
  3. Step 3: Cross multiply
    12,489.13x = 17,234.46 × 6,823.61
  4. Step 4: Simplify right side
    12,489.13x = 117,601,199.48
  5. Step 5: Solve for x
    x = 117,601,199.48/12,489.13
  6. Step 6: Final answer
    x = 9,416.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.